Search found 12 matches

by vegplot
Wed Feb 01, 2017 4:23 pm
Forum: Tech
Topic: Is there a solution to the swarf generating chain tensioner
Replies: 21
Views: 4618
Flag: Wales

Re: Is there a solution to the swarf generating chain tensioner

Thanks all, So lets go for a plastic shoe, what is the plastic of choice? Nylon, hard rubber, Teflon, PTFE....what? Would probably need a brand name or chemical formulae as there are so many to choose from... PTFE and Teflon are the same thing and I would have thought it ideal for this application....
by vegplot
Tue Dec 20, 2016 10:39 am
Forum: Off topic
Topic: New CCM price hike
Replies: 8
Views: 3795
Flag: Wales

Re: New CCM price hike

vegplot, would you update your profile and let everyone know in which part of the Brexit area you live in please? While a weak pound increases the cost of imports, it means there is an opportunity of sourcing a UK made part at a competitive price and depriving the foreign sweatshop owners of our ha...
by vegplot
Mon Dec 19, 2016 7:53 pm
Forum: Tech
Topic: B25 head gap
Replies: 7
Views: 1920
Flag: Wales

Re: B25 head gap

That's valuable information, thank you. I've done some basic measurements (not overally accurate as I don't have my vernier calipers available) and these are the measurement I obtained. Firelip height above cylinder: 0.154" Head recess: 0.081" Liner height above cylinder: 0.030" I'll assemble the en...
by vegplot
Mon Dec 19, 2016 12:14 pm
Forum: Off topic
Topic: New CCM price hike
Replies: 8
Views: 3795
Flag: Wales

Re: New CCM price hike

As many of their parts are sourced abroad combined with the fall in the GBP (Brexit has a role to play in this) making imports more expensive then it makes sense that CCM increases pricing accordingly. I have a GP450 and have to say it's an excellent machine, we recently took delivery of another for...
by vegplot
Mon Dec 19, 2016 11:38 am
Forum: Tech
Topic: B25 head gap
Replies: 7
Views: 1920
Flag: Wales

Re: B25 head gap

minetymenace wrote:It will be the liner...I think there is a thread about this just a few months old...have you done a search?
Thank you, I'll keep looking.
by vegplot
Mon Dec 19, 2016 1:33 am
Forum: Tech
Topic: B25 head gap
Replies: 7
Views: 1920
Flag: Wales

B25 head gap

Hi, I recently had a new liner fitted and previously, a couple of years ago, I had the cylinder head refurbished by the same reputable firm. However, now that I have them together I find the gap between the head and the barrel is a massive 71.5 thou. Does anyone have the specs. for the liner protrus...
by vegplot
Mon Aug 22, 2016 9:22 pm
Forum: Tech
Topic: Sripping powder coating on frame?
Replies: 14
Views: 3178
Flag: Wales

Re: Sripping powder coating on frame?

I used industrial paint stripper (eBay) which does a good job but is noxious stuff. Loctite SF7200 gasket remover is very good as it foams and stays in place but is hellishly expensive.
by vegplot
Mon Aug 22, 2016 9:16 pm
Forum: Tech
Topic: Small problem with crinkle (QD) hub ('69 B25)
Replies: 9
Views: 1991
Flag: Wales

Re: Small problem with crinkle (QD) hub ('69 B25)

crankbuster wrote:There should be a tolerance ring behind one of the bearings .
https://youtu.be/7ClLXK3UKtE
Yes, that's in place. I was careful to ensure it was. In fact I used your video as a guide. Thank you for that.
by vegplot
Mon Aug 22, 2016 6:02 pm
Forum: Tech
Topic: Small problem with crinkle (QD) hub ('69 B25)
Replies: 9
Views: 1991
Flag: Wales

Re: Small problem with crinkle (QD) hub ('69 B25)

Is there a difference between the two? C3 has a greater internal clearance than CN hence the greater resistance to issues from tight housings, they are stamped to identify on the side near the part number. If there is no clearance stamp/identification then the bearing is a no name Chinese bearing. ...
by vegplot
Mon Aug 22, 2016 3:50 pm
Forum: Tech
Topic: Small problem with crinkle (QD) hub ('69 B25)
Replies: 9
Views: 1991
Flag: Wales

Re: Small problem with crinkle (QD) hub ('69 B25)

hi vegplot, the distance between the shoulders inside the hub, should be the same as the length of the central bearing spacer. (or very slightly shorter) take the brake side as correct depth, press (or gently tap) the new bearing in with one of the old bearings, or a spacer on top, up to the should...
by vegplot
Mon Aug 22, 2016 3:47 pm
Forum: Tech
Topic: Small problem with crinkle (QD) hub ('69 B25)
Replies: 9
Views: 1991
Flag: Wales

Re: Small problem with crinkle (QD) hub ('69 B25)

kommando wrote:Have you used C3 bearings or CN, CN can feel rough if the housing grip the bearing a bit tight.
Not sure, I'd have to take it apart again to find out. Is there a difference between the two?
by vegplot
Mon Aug 22, 2016 9:35 am
Forum: Tech
Topic: Small problem with crinkle (QD) hub ('69 B25)
Replies: 9
Views: 1991
Flag: Wales

Small problem with crinkle (QD) hub ('69 B25)

After stripping down and cleaning I replaced the bearings with new. However, I found that after driving the bearings home found the axle shaft locked solid rather that rotating freely as expected. I tapped back one of the bearings by using a brass drift on the axle shaft as though trying to drive on...