flak monkey
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 posted on 12/9/09 at 08:41 AM |
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Oh bu88er - resolved
Been having more of a measure up of my flywheel trying to determine what it is from.
The flex plate which was attached to the engine measures 290mm diameter (across the teeth) and has 112 teeth.
The flywheel measures 285mm and has 110 teeth.
Whats the betting that the flywheel wont engage with the starter properly?
David
[Edited on 12/9/09 by flak monkey]
Sera
http://www.motosera.com
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MikeRJ
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| posted on 12/9/09 at 08:45 AM |
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quote:
Originally posted by flak monkey
Whats the betting that the flywheel wont engage with the starter properly?
Given that the flywheel has two less teeth I;d say it's an absolute certainty 
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clairetoo
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| posted on 12/9/09 at 08:45 AM |
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quote:
Originally posted by flak monkey
The flywheel measures 285mm and has 110 teeth.
Whats the betting that the flywheel wont engage with the starter properly?
David
I'll have a quid on it not working 
Its cuz I is blond , innit
Claire xx
Will weld for food......
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adithorp
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| posted on 12/9/09 at 09:04 AM |
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Is the pitch of the teeth the same?
If it is it'll work...but don't blame me if it doesn't!
2.5mm difference in radius isn't enough to stop the gears engaging. Given the amount of wear you sometimes see on starter rings and they still
work my money is on it working. It won't be perfect but...
adrian
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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r1_pete
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| posted on 12/9/09 at 09:12 AM |
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It will probably work, but as wear sets in there will be more jams than starts!!
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theconrodkid
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| posted on 12/9/09 at 09:14 AM |
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check the starter teeth mesh ok with the ring gear,the mounting holes in the bellhousing will bring the starter to the right place for the
flywheel.
worst case is a different starter
who cares who wins
pass the pork pies
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Steve Hignett
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| posted on 12/9/09 at 09:56 AM |
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If it doesn't (I think it will) just file some of the rear face of the starter ring gear down, and a smidge off the top.
It doesn't have to survive forever!
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goaty
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| posted on 12/9/09 at 10:13 AM |
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i agree with above, i think it will work but wear faster than it shoudl do and cause issues in the end.
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02GF74
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| posted on 12/9/09 at 10:48 AM |
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hmmmnmm, a smidge under 2 % difference.
if your starter motor is not new, chance are it is worn to at least that amount.
I know bike chains should be replaced at 1 % wear, when they are, the gear/chain does not jump so my reckoning you'll be ok.
maybe.
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hillbillyracer
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| posted on 12/9/09 at 11:45 AM |
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What's the possibilties on getting a starter with another tooth bigger drive gear?
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flak monkey
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| posted on 12/9/09 at 11:48 AM |
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Thanks guys. This is for the duratec. Everything points to the flywheel I have to being a cvh item, will do some more measurement.
If I can get this to all work its certainly a cheaper option than the others.
The flywheel I want to fit is the one with the smaller diameter.
Just dont a bit of maths:
Circumference of correct ring gear = 911mm and 112 teeth so tooth pitch is 8.13mm
Circumference of the one I want to use = 895mm and 110 teeth so the pitch is also 8.13mm
So the pitches should be right, just a case of how the mesh is.
The starter is bolted to the block on the duratec (not to the bellhousing) so I may be able to modify the starter to bring the mesh correct as long as
there is 2.5mm clearance everywhere
David
Sera
http://www.motosera.com
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big_wasa
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| posted on 12/9/09 at 12:03 PM |
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Whats the chances of mounting it to the bellhousing as per sierra ?
Its just a case of sierra fly' and starter ?
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big_wasa
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| posted on 12/9/09 at 12:06 PM |
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Just looked at your bellhousing so thats no chance then.
Maybe make up mounts for cvh starter ?
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flak monkey
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| posted on 12/9/09 at 12:13 PM |
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quote:
Originally posted by big_wasa
Just looked at your bellhousing so thats no chance then.
Maybe make up mounts for cvh starter ?
Engine etc 20 miles away at the mo.
Will have another look this afternoon. I reckon that I can mod the starter to move it 2.5mm closer to the ring gear without too much hassle (basically
needs a bit milling off it I think)
There is no chance of using an alternative bellhousing as the bolt pattern on the block is completely different.
You can see the starter bolted to the block in this pic:
 
Alternator mounts finished
David
[Edited on 12/9/09 by flak monkey]
Sera
http://www.motosera.com
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Stuart_B
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| posted on 12/9/09 at 02:39 PM |
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thats a bugger, david
i think i will see whta you come with and then get a flywheel.lol
as i still got some time before i start mine.
staurt
black mk indy, 1.6pinto on cbr600 bike carb's.
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flak monkey
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| posted on 12/9/09 at 02:48 PM |
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quote:
Originally posted by Stuart_B
thats a bugger, david
i think i will see whta you come with and then get a flywheel.lol
as i still got some time before i start mine.
staurt
Looks like it will work with a minor mod to the starter. Teeth pitch is spot on, just need to cut some of the starter away. I already have mine in
bits, will take it to work on monday and chop some off it.
Just trying to find out exactly what the flywheel is from now.
Sera
http://www.motosera.com
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