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SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> hot start/decompression lever /cgi-bin/YaBB.pl?num=1320706246 Message started by beacon on 11/07/11 at 14:50:45 |
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Title: hot start/decompression lever Post by beacon on 11/07/11 at 14:50:45 I'm trying to get rid of the decompression solenoid, relay, and extra wires and came up with the idea of using the "hot start" lever that sits atop the clutch lever on most dirt bikes. Pull in the lever with your left index finger and a cable attached to the decompression lever does the job. Once started you let go of the hot start lever and get on your way. Has anyone tried this? If so what lever/perch did you use? |
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Title: Re: hot start/decompression lever Post by justin_o_guy2 on 11/07/11 at 21:33:21 The decomp is only engaged for a few parts of a second. Just long enough to let the starter get the thing thru compression IF it happens to shut down on compression. The decomp always kicks in, but just a short while, |
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Title: Re: hot start/decompression lever Post by teabowl13 on 11/09/11 at 06:54:28 I was looking at those on Ebay the other day: thinking the very same thing. You could get a used lever for $20-$25. I imagine it would work as long as you activated it the same way that the Ryca guys are doing with their manually operated foot pedal, and to my eye it seems a little less awkward. Somewhere in the Ryca stuff they explain how to use it; just do the same thing with the lever instead of your foot and it should work. Then you just have to figure out how to get one mounted onto the bars (all the ones I saw were for 7/8" bars, but you could probably work around that; drill out the bracket or something like that?) I haven't tried it, or even decided if I am going to or not yet, but if you do, please post it up. I'd love to see it. That's about the only thing about the Ryca bikes that I personally don't like, so having another alternative would be great. Cheers! |
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Title: Re: hot start/decompression lever Post by BuckRYCA on 11/09/11 at 12:40:11 I've got a Ryca. Just put 3000 miles on it since June 16. I did not like the decompression linkage set-up provided with the kit. Its appearance was strange, but more importantly it was easy to bend the rod linkage by using too much force. I switched over to a hand operated lever. I used a part of the Ryca supplied linkage and added a piece of rubber tubing and a washer to make it easier to find and grasp the lever. You may find a picture of it in my collection of Ryca/Savage photos here https://picasaweb.google.com/gmbhsg/SuzukiSavagePublic?authkey=Gv1sRgCIWagYOk0LqxwgE# - second row, third photo. What was smart about the Ryca set-up was that it used your left-foot for activating the decompressor. That allowed your left hand to pull in the clutch and your right hand to hit the starter switch. When I changed to a hand-operated decompressor lever I had to bypass the clutch pull-in switch -- I dont' have three hands. So I must be careful to ensure the bike is in neutral before hitting the starter switch. My start-up drill is:
I got rid of some weight and cleaned up the appearance. |
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Title: Re: hot start/decompression lever Post by MotoBuddha on 11/09/11 at 13:37:17 The trick is to find a hot start lever for 1" bars. Or do some machining. |
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Title: Re: hot start/decompression lever Post by wombat on 11/11/11 at 06:19:16 Yes, most are made for 7/8" bars. But that's no problem as I have a machine shop that will take a 1" solid bar and turn it down to 7/8 where the clutch perch sits and bore out the ends to take a cap and bar-end mirror--all for a reasonable price. The real problem with the hot start system is that the clutch levers are usually too short and don't match our stock levers. So I'm looking around for ones that work. Another option is to take a bar-mounted choke lever as seen on old Brit bikes. Have to look into this one a bit more though. 1B2A2E2D2038237E7C4F0 wrote:
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Title: Re: hot start/decompression lever Post by MotoBuddha on 11/11/11 at 08:22:22 A little poking around turned up this -- a small decompression lever integrated into the clutch lever. http://i280.photobucket.com/albums/kk182/motobuddha/0f8122f9.png It's 7/8", but I think there's enough wall thickness on the Ryca bars to turn down a 7/8" groove (which might need to be reinforced with a piece of tubing inside). But then you're left figuring out the specs for the cable. |
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Title: Re: hot start/decompression lever Post by verslagen1 on 11/11/11 at 08:24:26 Why not put the lever on our perch? |
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Title: Re: hot start/decompression lever Post by BuckRYCA on 11/11/11 at 08:48:59 Keep this in mind: Whether hand or foot or solenoid operated, the decompression lever must be released within a fraction of a second of hitting the starter or the engine will stall. |
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Title: Re: hot start/decompression lever Post by MotoBuddha on 11/11/11 at 09:17:07 For most people, a finger can react faster and with more control than a foot. |
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Title: Re: hot start/decompression lever Post by Serowbot on 11/11/11 at 09:42:32 45677C674A7D6C6C6069080 wrote:
That's because we're so used to accidentally touching hot things... :-?... These things might be adaptable, too... They do come in 1"... Choke lever (http://www.ebay.com/itm/Chrome-Magneto-Choke-Air-Lever-LH-Flat-End-1-/130464303125?pt=UK_Motorcycle_Parts&hash=item1e60474815) http://img.auctiva.com/imgdata/6/6/9/4/8/6/webimg/418665893_tp.jpg |
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Title: Re: hot start/decompression lever Post by MotoBuddha on 11/11/11 at 10:16:26 Whatever the hand/finger controlled solution, I like to be able to work it easily while holding in the clutch lever. |
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Title: Re: hot start/decompression lever Post by Serowbot on 11/11/11 at 10:41:58 My bar-end mirrors, leave me with the mirror mounts open,... I wonder if I could rig a thumb lever there?... Which would be better right hand or left?... |
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Title: Re: hot start/decompression lever Post by wombat on 11/11/11 at 10:50:08 Complicated to do as you not only need a lever and pivot, you also need a solid guide to accept the cable sleeve. 3D2E3938272A2C2E257A4B0 wrote:
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Title: Re: hot start/decompression lever Post by wombat on 11/11/11 at 10:53:52 Good idea! Should be on the left side. Not sure how you'd actually do the mounting of one of those round Brit choke levers that are meant to clamp onto the bar. t 5B4D5A475F4A475C280 wrote:
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Title: Re: hot start/decompression lever Post by teabowl13 on 11/11/11 at 10:55:44 HEY MAN, I like the 1" choke lever you posted up there; it would certainly be easy to mount and wouldn't look out of place or awkward on your bars. I only wonder this: those de-comp levers are set up like a clutch or brake line: the automatically release as soon as you let off pressure. The choke lever is NOT; when you pull it open, it holds its place. You'd have to manually push it closed at that split second unless you can adjust the tension on it so that it's super loose and pulls itself closed? Definitely worth looking into. I wouldn't want to take any meat out of my handlebars at all without reinforcing them from the inside. NOT a place I'd want to have a weak spot. Even if you are working with a perch made for 7/8" bars, I think it would be easier and safer to take the meat out of the perch clamp, or modify it somehow, after all it isn't something that requires a lot of strength. Your bars are.... |
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Title: Re: hot start/decompression lever Post by Serowbot on 11/11/11 at 11:01:46 Wheels are turning.... Hmmm?... A simple, classic, bicycle shift lever, mounted to the left side mirror mount... Thumb activated... Can't be right side,... 'cause you need the thumb for the starter button ...(just thought of that)... ;D... |
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Title: Re: hot start/decompression lever Post by MotoBuddha on 11/11/11 at 11:45:35 370602010C140F5250630 wrote:
The type of choke lever serowbot showed can be loosened. In fact, if there's any friction material inside, it can probably be removed. |
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Title: Re: hot start/decompression lever Post by MotoBuddha on 11/11/11 at 11:56:49 3E283F223A2F22394D0 wrote:
On the right you'd be trying to work the lever while also pushing the start button. THAT takes some exceptional hands and coordination. |
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Title: Re: hot start/decompression lever Post by Serowbot on 11/11/11 at 12:13:08 4E6C776C417667676B62030 wrote:
On the right you'd be trying to work the lever while also pushing the start button. THAT takes some exceptional hands and coordination.[/quote] A man would have to be all thumbs... Wait a minute,... I am all thumbs!.... ;D... |
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Title: Re: hot start/decompression lever Post by MotoBuddha on 11/11/11 at 12:25:25 Then there's this type of setup. http://i280.photobucket.com/albums/kk182/motobuddha/785da7f3.png I doubt the stock Savage switch pod has enough material or internal clearance to tap holes and bolt on an old school choke lever, but I offer this up in case it sparks any other ideas. |
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Title: Re: hot start/decompression lever Post by MotoBuddha on 11/13/11 at 10:53:39 I just ordered on of these. Only $19.95. http://i280.photobucket.com/albums/kk182/motobuddha/9de3ff9e.jpg It's for a 7/8" bar, of course, but removing the nylon sleeve will get me closer to 1". I could get the rest machined out. It looks like there would be more material left than others I've seen. |
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Title: Re: hot start/decompression lever Post by wombat on 11/13/11 at 16:56:30 I too ordered a clutch lever/perch with "hot start" lever. Problem turned out to be that the shorter-style clutch lever used on dirt bikes didn't clear the switch pod and even if it did it was too short to grab with all fingers as on most street bikes. Let me know how yours works out. 4F6D766D407766666A63020 wrote:
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Title: Re: hot start/decompression lever Post by MotoBuddha on 11/13/11 at 18:04:33 Yeah, there will probably be problems wit the clutch lever, but I figure it's worth twenty bucks to see if there's anything I can do with it. |
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Title: Re: hot start/decompression lever Post by kevinphan on 11/14/11 at 08:21:07 65475C476A5D4C4C4049280 wrote:
Can you post up the link to this? |
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Title: Re: hot start/decompression lever Post by MotoBuddha on 11/14/11 at 09:13:17 3C32213E39273F3639570 wrote:
Can you post up the link to this?[/quote] http://www.mxsouth.com/moose/moose-racing-levers-lever-sets-ultimatefly-clutch-hot-start-levers.htm |
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Title: Re: hot start/decompression lever Post by MotoBuddha on 11/19/11 at 11:07:16 The hot start lever thing arrived. http://i280.photobucket.com/albums/kk182/motobuddha/1a6ef0fa.jpg With the help of a skilled aluminum welder, I think it can be made to work. The inside arc of the lever is already 1 inch, so there's a problem I won't need to deal with. It looks like I could cut off the bottom part of an extra clutch perch I have, trim a bit from the hot start lever, then weld the two pieces together. http://i280.photobucket.com/albums/kk182/motobuddha/0787cf94.jpg http://i280.photobucket.com/albums/kk182/motobuddha/27a57aaf.jpg http://i280.photobucket.com/albums/kk182/motobuddha/89e617c0.jpg |
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Title: Re: hot start/decompression lever Post by arteacher on 11/19/11 at 15:02:23 Bear in mind that you are going to have to apply enough force to open 2 exhaust valves. Is your left index finger strong enough to do that? My old Enfield had a decomp release in the form of a smaller lever right under the clutch lever, but you could get three fingers on it. It was a kind of safety feature because you couldn't pull it in without pulling in the clutch lever as there wasn't enough room to get your fingers on the decomp lever alone, so you had to pull in the clutch to start it. |
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Title: Re: hot start/decompression lever Post by MotoBuddha on 11/19/11 at 16:15:19 Actually, it would be the left thumb with this setup. Besides, I can already turn the short lever down on the engine by hand. No problem. |
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Title: Re: hot start/decompression lever Post by verslagen1 on 11/19/11 at 17:15:51 72504B507D4A5B5B575E3F0 wrote:
that lever should be going up. you got your spring on backwards. if you turn it up easy, then it's on the exhaust stroke and you'll won't need to operate your lever. |
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Title: Re: hot start/decompression lever Post by MotoBuddha on 11/19/11 at 17:41:26 372433322D2026242F70410 wrote:
that lever should be going up. you got your spring on backwards. if you turn it up easy, then it's on the exhaust stroke and you'll won't need to operate your lever.[/quote] I should have written, "I can already turn the short lever (the one that's down on the engine) by hand." But I was posting from my phone and trying to keep things short. ;) |
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