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#Post#: 9293--------------------------------------------------
Chain Tensioner?
By: Max Venturi Date: August 27, 2023, 5:50 pm
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I'm having a lot of problems setting the chain tension. has
anyone fitted a chain tensioner and if so how?
Thanks in advance.
#Post#: 9295--------------------------------------------------
Re: Chain Tensioner?
By: Jimr1999 Date: August 28, 2023, 1:14 am
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Hey Max.
The majority of CycleKarts seem to tension the chain by moving
the engine back and forth on the mounts. Some use a hinged mount
for the engine with bolts to jack the front or rear of the
engine to achieve tension. Some even just pack the engine up on
washers to get the spacing correct.
If you are going to put a tensioner on the chain line itself,
then most tensioners are designed for the "slack" (return) side
of the chain. If you are putting one on the drive (In tension)
side of the chain it needs to be a lot stronger and wear is
increased.
If you look on Ebay, there are many designed for pit bikes, it
is just a case of getting a mounting point.
HTML https://www.ebay.co.uk/itm/401832659087?epid=27004613254&hash=item5d8f17c88f:g:5UoAAOSwIjJZW5wn&amdata=enc%3AAQAIAAAA0N10KN1xvkHUDcPHhT7E3CCoOOptykXCssZ6Xga5XfLMWTOmsEihEvCJKkTjnfpvgwUIhdYVH%2FOuH7GyUCqIBMdePWvviXPEAtZZTMWwToFKu7kIXdlSW1KFsU1kIb0jW6INgC911mn8OTtf0v7hYeKKcZnV5KP3Jo9e2B8d2w1y0hQVqFR6MOoy5tCsreqfho57YDe25faNd6gJLs91wyAhdAHA7ZEeEeNv6dBOS7yUqmm4xU8CodpBC47FcLhbZ5Dkx4q743MRC6Jdgx9m%2BsM%3D%7Ctkp%3ABk9SR7Siq6zHYg
JimR
#Post#: 9296--------------------------------------------------
Re: Chain Tensioner?
By: Jimr1999 Date: August 28, 2023, 1:29 am
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Looking at your build journal Max, I found this photo...
HTML https://cyclekartsgb.createaforum.com/index.php?action=dlattach;topic=1144.0;attach=7121;image
You seem to have tensioners on the engine mount already? Are
these not enough?
JimR
#Post#: 9297--------------------------------------------------
Re: Chain Tensioner?
By: NewbieNick Date: August 28, 2023, 1:41 am
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Hi Max, i fitted an as yet untested chain tensioner yesterday,
quite a simple affair but seems to work. Look at my last build
journal entry for pictures.
Good luck Nick
#Post#: 9304--------------------------------------------------
Re: Chain Tensioner?
By: steve.white Date: August 30, 2023, 4:09 pm
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Firstly I'd like to say this is my first post and was looking to
say hello in the relevant section but I'm doing something wrong
somewhere as I cant find it.
Looking at this post for chain tensioner, I'm wondering is a
chain tensioner a good move? seems a little complicated, maybe
just move the components apart? As sprockets and chains wear I
have found the tensioner can't cope and the chain slips over the
sprockets under load. Just wondering.
#Post#: 9314--------------------------------------------------
Re: Chain Tensioner?
By: Max Venturi Date: September 6, 2023, 5:44 pm
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[quote author=NewbieNick link=topic=1178.msg9297#msg9297
date=1693204881]
Hi Max, i fitted an as yet untested chain tensioner yesterday,
quite a simple affair but seems to work. Look at my last build
journal entry for pictures. Good luck Nick [/quote]
Thanks Nick - simple and no doubt effective.
I have raised the motor using a spacer plate and rubber isolator
blocks and have finally got a reasonable tension on the chain.
I'll post a photo tomorrow.
If that solution doesn't work I'll copy your solution.
#Post#: 9315--------------------------------------------------
Re: Chain Tensioner?
By: Max Venturi Date: September 7, 2023, 3:35 pm
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Here's the engine mounted on isolation blocks. The chain tension
is good and the engine is positioned where I want it but the
blocks aren't really stiff enough. What I need is a metalastic
isolator plate.
#Post#: 9318--------------------------------------------------
Re: Chain Tensioner?
By: NewbieNick Date: September 8, 2023, 1:24 am
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Hi Max, does the chain jump off if you remove rubber blocks &
replace with more rigid spacer?
Just a thought but one American builder swears by an engine
mounting plate made from 2 18 mm plywood sheets bonded together.
Can you tension your chain by moving engine backwards on slots?
Best of luck Nick
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