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/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Drive belt adjust on RYCA CS-1 /cgi-bin/YaBB.pl?num=1346526061 Message started by Gyrobob on 09/01/12 at 12:00:59 |
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Title: Drive belt adjust on RYCA CS-1 Post by Gyrobob on 09/01/12 at 12:00:59 Since the swing arm is angled down so much lower in the RYCA configuration, the stock belt tensioner tool doesn't work anymore. With the RYCA configuration it would seem the belt would be pretty loose with no weight on the bike in order for the belt to be not overly tight when the shocks are fully compressed. What is the best procedure for adjusting the belt on a RYCA CS-1? |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by verslagen1 on 09/01/12 at 12:13:29 get someone to sit on it til the axle, pivot and drive pulley are in line. adjust it till snug but not tight. further compress to max, and see how loose and the same with no weight. the belt can be pretty loose |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by Gyrobob on 09/02/12 at 11:19:38 I just discovered the very short video Ryan did on youtube showing how to check the belt. http://www.youtube.com/watch?v=zKblvzmwytI Basically it says the belt should be fairly loose when on the sidestand,... loose enough to twist it 90 degrees. |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by Serowbot on 09/02/12 at 11:27:12 With 12.25" Intruder shocks on mine,.. (you don't want it to bind at full compression)... [media]http://www.youtube.com/watch?v=i2ZsZzTwRyk[/media] PS,.. stock bikes are fine adjusted like this, too... |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by Gyrobob on 09/16/12 at 10:27:08 The important part is to make sure the swingarm never overtightens the belt. While doing the swingarm carving, I took off the shocks, and (using the motorcycle jack) lowered the bike to where the rear tire was just about to hit things. The swingarm on the RYCA is still not straight out at that point. So, I need to get the minimum length of the RYCA supplied shocks to see how far they will let the swingarm move up. It would seem the best (safest) way to adjust the belt would be to take off the shocks, lower the bike slowly until the distance between the upper and lower mounting points are the same as the distance for the compressed shocks. That is the point where the belt will be the tightest. Adjust the belt fairly tight at that point. Any other position of the swingarm allowed by the shocks will make the belt looser. Raise the bike back up and install the shocks. |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by justin_o_guy2 on 09/16/12 at 20:44:59 YOu play guitar, Row? |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by Gyrobob on 09/17/12 at 05:30:16 302F292E33340535053D2F23685A0 wrote:
"you talkin to me?!" If so, yes. I paid for the first degree playing in R&R bands in the SF bay area in the 60s. I still have all the equip from those days. Here's one of our efforts in 1968: http://www.youtube.com/watch?v=8jwdSvqp0og |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by Gyrobob on 09/17/12 at 05:31:47 What is the distance between the mounting holes on the RYCA CS-1 rear shocks and full compression and no compression? (max and min length) I'm working on a more precise belt adjustment procedure, and I need this specification. This is a big deal for me because the Avon Speedmaster tire I use apparently has a larger diameter than was planned for the RYCA-modified swingarm. There is very little adjustment available between the point of the belt being too tight, and the tire rubbing on the swingarm. |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by Oldfeller on 09/17/12 at 06:25:09 You can run the belt on the tighter side of things to make some tire clearance, tight to the point the finger twist method only gets 45 degrees max defection if you have to. |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by Gyrobob on 09/17/12 at 08:36:42 4A6961636069696077050 wrote:
This method scares me because of the way the swingarm is down so much further than stock. When the RYCA shocks are fully compressed the swingarm is still nowhere near level. This is why I need to know the compressed length of the RYCA shocks. |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by justin_o_guy2 on 09/17/12 at 09:16:17 If the bike is in your garage, you can figure all this out. In fact, you can do better than just having numbers, you can have real world application data. Put a zip tie on the shocks & ride it & see how much the rod slipped into the tube. Odds are youll never bottom those shocks. Well,, If I was riding, it wouldnt happen, I weigh 160 & dont fly off of hills. |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by Gyrobob on 09/17/12 at 09:24:59 I just need to know how far the swingarm can move up with the RYCA shocks installed. Without fully compressing the shocks myself, I don't have that info available. I don't have a spring compressor that'll work on shocks. Maybe I could take all the preload off, and find someone who hates the Wheat Belly concepts and have him put his 300 pounds on the bike. THAT might fully compress them. |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by justin_o_guy2 on 09/17/12 at 09:53:34 The point Im trying to make is, IF the swingarm is below the mid point always, then the belt will never get,, wwait.. What is it exactly youre trying to check for? Tire clearance? Or are you trying to get the belt adjusted? |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by Gyrobob on 09/17/12 at 10:20:19 786761667B7C4D7D4D75676B20120 wrote:
I had the axle adjusted for the belt. I discovered it was too close to the swingarm,.. the tire rubbed. When I adjusted for tire clearance, I was afaid the belt would have been too tight when the shocks were compressed. There is not much leeway, here, between making sure the tire does NOT rub at speed, and the belt being too tight when the suspension bottoms out. |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by justin_o_guy2 on 09/18/12 at 05:30:36 Does it bottom out before the swingarm gets horizontal? |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by Gyrobob on 09/18/12 at 06:15:25 4A555354494E7F4F7F47555912200 wrote:
The tire hits the license plate mount way before the swingarm is horizontal. Ryan emailed me that the RYCA shocks are 13" extended, and 11" compressed. He also mentioned ~11.2" is where there is a "soft stop." So, now, here is what I will be using for belt adjustment: RYCA CS-1 belt adjustment procedure This procedure will adjust for the max tire/swingarm clearance without overtightening the belt, which is an important issue when the RYCA modified swingarms are used with larger diameter (4.00 - 18) tires. 1. Get the rear wheel into the air using a jack of some sort. 2. Undo the tops of the shocks, and tilt them out of the way. 3. Lower the bike carefully until the distance between the centers of the shock mounting points is 11 inches (or whatever the distance is for max compression of your shocks). 4. Loosen the axle just enough so you can move it fore and aft using the belt adjuster bolts. If you loosen it too much, when retightened, the swingarm gets a tiny bit longer, making the belt tighter. 5. Allow the axle to move forward a little (~ 1/16") to a loose belt position. The final movement of the axle should be from a forward position moving aft using the belt adjuster bolts. 6. Adjust the axle so the belt is moderately tight. -- The belt should be just tight enough to permit twisting it 45 degrees. -- Make sure the pulley is aligned with the belt by placing a straight-edge along side the pulley to verify it is parallel with the edge of the belt. 7. Tighten the axle back up and, with the shock mounting points still at 11 inches, recheck the belt tightness. It should be fairly tight (45 degree twist), but not rigid. 8. Without turning the belt adjuster bolts, tighten the belt adjuster nuts. 9. Check the clearance of the tire and swingarm. 10. Jack the bike up to where the distance between the shock mounting points is 13 inches (or whatever the distance is for max extension of your shocks). 11. Re-install the shocks. 12. Lower the bike and ride away. 13. After the first ride, recheck the adjustment to make sure nothing moved. |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by BuckRYCA on 09/20/12 at 06:22:17 So, Gyrobob, after you followed this adjustment procedure on your Ryca how loose is the belt when the bike is on its sidestand? (lower run of belt midway between the pulleys) Thanks! |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by Gyrobob on 09/20/12 at 18:03:30 497E6860434648480B0 wrote:
I can twist it just past 90 degrees if I try pretty hard. It does feel loose when parked, but whilst aboard and underway, I don't get much of a driveline snatch feel at all. (snatch feel?) :o I'm pretty impressed with this belt drive thing. I've always had chains or shafts. Lightweight, quiet, no maintenance,.. good deal. There are only two things I don't like about belts,.. 1. Just about impossible to change final drive ratios. 2. The rear pulley is too honkin' big!! It doesn't look tidy. It has too much visual impact. I wonder what a friction drive would be like? http://www.barnettharley.com/component/k2/item/3444-cc-choppers%e2%80%99-wild-friction-drive-chopper.html No chain, no belt, no shaft. |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by HighME32 on 11/19/14 at 11:02:32 So does the 90° test work for the ryca cs1 on a kickstand? |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by Dave on 11/19/14 at 12:31:30 0A2B252A0F077170420 wrote:
The belt on the RYCA when on the kickstand needs to be looser than it is on a stock bike. When you put your weight on the bike the swingarm becomes more level and as a result it pushes the rear wheel and pulley back a bit and tightens the belt. On the stock bike the swing arm is nearly level when unloaded and changes the belt tension very little when you sit on the bike. How much? How do you describe that in written words? I dunno.......just loosen it a bit and don't go too far so that the belt gets floppy. You should easily be able to twist the belt 90 degrees, and the top of the belt if pulled up should not hit the belt guard. |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by HighME32 on 11/21/14 at 09:32:50 Thanks again Dave, I have been doing it at 90° with a bit of effort to turn. It was really tight when i first got the bike, but was making some rubbing noises, so i took it out a bit. I'll loosen it up a bit more when I finish replacing the bearings. |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by verslagen1 on 11/21/14 at 09:38:23 So now you know why you have to replace the bearings. |
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Title: Re: Drive belt adjust on RYCA CS-1 Post by HighME32 on 11/25/14 at 17:52:36 Im not sure it was that Verslagen. My wheel was missing the spacer between the pulley bearing and wheel bearing. My belt is just a little on the tight side but not as much as the tension a stock bike would need. |
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