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panchop
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« on: July 01, 2007, 11:48:00 PM » |
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I had my frame reconfigured at the last moment. I have 76 inches of wheelbase now and a good long run for the chain drive. Have any of you guys run chain tensioners? Is there any salt issues i should consider before i fab one up.
Thanks
Greg
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Seldom Seen Slim
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Nancy -- 201.913 mph record on a production ZX15!
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« Reply #1 on: July 02, 2007, 11:55:43 AM » |
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Salt issues? At Bonneville? Why would you ever think of asking a question like that?
No hassles at all...if you use a plastic chain. If not -- when your runs are over, remove the chain, soak it in hot water for a few hours to remove the salt, then soak it in kerosene to remove the old lube, then soak it in a good chain lube starting hot but allowing the lube to cool while the chain is still submerged.
Then throw the chain away anyway and install a brand-new one.
Oh, you asked about tensioners, not just the chain per se. Oh -- please ignore the above suggestions. Sorry.
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Jon E. Wennerberg
a/k/a Seldom Seen Slim
Skandia, Michigan
(that's way up north)
2 Club member x2
Owner of landracing.com
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1212FBGS
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« Reply #2 on: July 02, 2007, 12:06:28 PM » |
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i got a chain tension her... She tightens it up every time i start talking about parts i need for the car  kent |
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firemanjim
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« Reply #3 on: July 02, 2007, 12:37:38 PM » |
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I have seen a bunch of very stretched bikes at Bonneville with no tensioners, how much did you stretch the arm?
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Bonneville 2001,2002,2003,2004,and NO stinking 2005,DLRA 2006, next?
Well,sure can't complain about 2008--6 records over 200 and 5 hats from Bonneville,Bubs, and El Mirage for the team!
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JackD
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« Reply #4 on: July 02, 2007, 12:45:59 PM » |
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SERIOUSLY A long span of chain and a long pull on a run will heat and cause chain to stretch beyond any other experience. Everybody knows about the new chain stretch, which is really just pumping the assembly lube to one side, but the Salt is a different animal. Unless the frame side flexes, even a slack chain will find it's way to the next sprocket. A roller that is common for chain control on a dirt bike will not stand the trip. A stock, spring loaded nylon shoe from a HD primary will spread the contact area out and live on the bottom run, even without the constant oiling that is provided by the HD. Remember, you might be coming down on compression for more than mile, and that will put the slack in the top run, but at least you are not transmitting as much power. The spring load should be installed so that when the bottom run goes tight when slowing it does not bottom out the travel of the spring .  |
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"I would rather lose going fast enough to win than win going slow enough to lose."
"That horrible smell is dirty feet being held to the fire"
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Stainless1
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Robert W. P. "Stainless" Steele Wichita, Kansas
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« Reply #5 on: July 02, 2007, 02:32:08 PM » |
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We run one on our bike disguised as a lakester. I suspect our 20 inch wheels spin faster than any of the bikes except for maybe 3. We built a little spring loaded swingarm under the chain. We tried little sprockets and a variety of other stuff, and found that the best material was a hard urethane roller or Nylon roller. Come by an take a look during speedweek.
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Stainless
MSA Lakester #1000 my fastest mile 245 and change, 84 ci turbobusa motor... but Corey's 233 MPH H/BFL record is still 3MPH faster than mine.
Builder of Bike 278 1000cc APS-G, Kids Red Hat Record 208.959 (old PS rules)
Other kids A-G record 179.172 Josh O record 182.266
Co-owner of the Amo Steele Streamliner, #1411... still sorting
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JackD
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« Reply #6 on: July 02, 2007, 04:42:43 PM » |
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I wanna buy somthin that will jerk along with a HD primary for the life of the motor. Granted that is usually not much longer than a race motor. |
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"I would rather lose going fast enough to win than win going slow enough to lose."
"That horrible smell is dirty feet being held to the fire"
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Dakin Engineering
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« Reply #7 on: July 02, 2007, 05:47:35 PM » |
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I use an inline skate wheel.
Sam
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Turbo Sportsters
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1212FBGS
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« Reply #8 on: July 02, 2007, 06:59:11 PM » |
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600 lb bike.... less than 200hp...... less than 200mph.... naaaah don't worry about it.
kent
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Jonny Hotnuts
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« Reply #9 on: July 02, 2007, 07:06:25 PM » |
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I have had good luck with elastomeric tensioners: http://www.grainger.com/Grainger/items/1L835You have to choose a idler sprocket.....a number 50=530 chain like: http://www.grainger.com/Grainger/items/5A552These will allow the chain to stretch and continue to provide constant tension, you can adjust the amount of tension and bearing makes less drag compared to a friction tensioner. Will be using these or something close on my 2 busa motor streamliner in 2010. |
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jonny_hotnuts@hotmail.com "Sometimes it is impossible to deal with her, but most of the time she is very sweet, and if you caress her properly she will sing beautifully." *Andres Segovia (when Im not working on the car, I am ususally playing classical guitar)
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ol38y
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When all else fails, gas it!
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« Reply #10 on: July 02, 2007, 07:19:42 PM » |
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 I didn't think I would need one, but since it has been brought up. I am running a stock swing arm length Sportster that should put out about 120 HP. Does anyone here think I might need one? Thanks all, Larry
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Larry Cason
Bakersfield,CA It's a dry heat!
2010 BUB 1350 M-PG record
2012 Speedweek 1350 A-PG record 169.975
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Jonny Hotnuts
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« Reply #11 on: July 02, 2007, 09:26:49 PM » |
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Larry:
I have a turbo hayabusa for my weekend bike making around 275 hp at the wheel with the stock swing.
I dont have one......
I would think that it would be a safe bet to say you would be ok.
Come to think of it I have not seen any on the very few stretched bikes I have seen......
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jonny_hotnuts@hotmail.com "Sometimes it is impossible to deal with her, but most of the time she is very sweet, and if you caress her properly she will sing beautifully." *Andres Segovia (when Im not working on the car, I am ususally playing classical guitar)
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ol38y
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When all else fails, gas it!
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« Reply #12 on: July 02, 2007, 10:20:03 PM » |
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Thanks Jonny. I didn't really think I would need one, but, I'd rather ask now then wait till I got to the Salt.. |
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Larry Cason
Bakersfield,CA It's a dry heat!
2010 BUB 1350 M-PG record
2012 Speedweek 1350 A-PG record 169.975
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1212FBGS
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« Reply #13 on: July 03, 2007, 12:53:28 AM » |
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those grainger parts sure look pretty.... just wait and see what they look like after a 200mph pass because after a 300mph pass there wont be enough pieces left to identify......
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JackD
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« Reply #14 on: July 03, 2007, 04:11:38 AM » |
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those grainger parts sure look pretty.... just wait and see what they look like after a 200mph pass because after a 300mph pass there wont be enough pieces left to identify......
Hey Kent ! You are reading my lines again !  |
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"I would rather lose going fast enough to win than win going slow enough to lose."
"That horrible smell is dirty feet being held to the fire"
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