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Messages - Sprunghub

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61
CB750 / Re: Exhaust systems
« on: July 03, 2009, 12:25:07 AM »
Steve....did you ever get the links to the pics I sent of the Dunstall......I only ask because my emails have a habit of going into peoples 'Spam' baskets.....

62
CB750 / Re: Why no fairings on the F1 ?
« on: July 03, 2009, 12:22:53 AM »
Well at least I'd know it's a "fit" !!....which is half the battle buying a generic one.  Have emailed.

Nigel 

63
CB750 / Re: Why no fairings on the F1 ?
« on: June 28, 2009, 11:14:39 PM »
Excellent.....I will keep my eyes open for something suitable.

64
CB750 / Why no fairings on the F1 ?
« on: June 28, 2009, 04:38:05 PM »
I've read, in a couple of places that Honda recommended that fairings should not be fitted to the F1.  I've even read that there would originally have been a 'transfer' to that effect on the bike. My mate has an F2 with a huge Polaris style "Windjammer" thing on it & I have seen them 'about' with Dunstall style race fairings, & others.

Is it 'science' ? or myth......or best not too ???, just interested from a style perspective.  I'd quite like to fit one really......but wouldn't want to "disrupt" the front end too much, or at all, if I could help it. :-\

65
CB750 / Not for the purists....but....
« on: June 24, 2009, 08:09:57 AM »

66
CB750 / Re: Colour match for Sulfur yellow ?
« on: June 14, 2009, 09:01:39 PM »
I'm looking for paint too for my F1. Can't decide on red or yellow though.

Tanks primed & ready to paint.  Am going to use RS Paints Sulfur yellow topped off with their 2k non-toxic (can never remember what the nasty stuff is, but tehre paint doesnt have it) lacquer.

I'll let you know how it goes.

67
Misc / Open / Re: Re-chrome or Re-Place
« on: June 09, 2009, 10:47:09 PM »
I've had 1950's Dunlop rims re-plated......cost about

68
CB750 / Re: Colour match for Sulfur yellow ?
« on: June 04, 2009, 11:04:10 PM »
Andy, I'd sussed the Honda code, trouble is, they need a RAL code or a BS code to mix it.  There must be a match which will be so close as to be indiscernable.  If the worst comes to the worst I'll get some 2K mixed up, but I have to call in favours for the painting & hate that stuff.  Also paranoid about petrol stripping the work & haven't had much luck with petrol proof laquers.    I'm told the original tanks were enamel - not sure if it's true.

69
CB750 / Re: Colour match for Sulfur yellow ?
« on: June 04, 2009, 10:00:58 PM »
Thanks for the link & advice....not sure they'll play ball re providing the code so I can get it mixed up.....but the local Halfords has loads of 'swatches' & they're more likley to let me take the RAL code or whatever to check with you chaps ;).....& then hopefuly Tekaloid will make me up some enamel.

70
CB750 / Re: Final drive chain
« on: June 04, 2009, 09:58:40 PM »
All fitted, 1/2 cwt of accumulated gunge all cleaned back to nice bright alloy, new sprockets, nice Regina chain in shiny gold, rear wheel assy all cleaned up.....looks A1 & rides as sweet as a nut.  Very pleased, chrers again all. 8)

71
CB750 / Re: Final drive chain
« on: June 04, 2009, 02:51:46 PM »
Cheers all.....instinct told me it was a slackness thing......but.....the pre-formed 'groove' isn't wide enough for an 'O' ring chain, in all honesty....but it shouldn't be contacting with it if set up properly, so hopefully will be ok.

72
CB750 / Final drive chain
« on: June 03, 2009, 08:57:53 PM »
Sorry to monopolise the q's & a's....but the bikes running well enough & getting some miles on her now.

I've got a very good 'local' chain / sprocket supplier, & as the chain on the bike is as cruddy as hell & I'm a bit 'critical' about chains & tyres, I decided to get a new socket set & chain.  I'm not sure the old ones have done that much.....just been horribly "greased".

I rang up & they were a bit cautious about supplying an 'O' ring chain.  The 'man' thought it might be a bit heavy for the clearances in the sprocket 'case' at the front end - mainly due to width.

He advised me to pop over & see him to pick up the sprockets & let him weigh up the 'width' to see if an 'O'  ring would fit.

When I turned up he pointed out that underneath the grease........was an 'O' ring chain....so it would inevitably fit.  Chain duly supplied, so far, so good.

Tonight as a prelim to an intended fit tomorrow, I've removed the sprocket cover just to make sure there will be no 'gremlins' tomorrow when I propose to fit it.  On removing the small case which covers the sprocket, I found that there was fairly substantial "chaffing" to the triangular rubber/plastic cover which protects the top alloy "blade" which sits just below the top run of the chain........& more remarkably, fairly deep scoring of the reinforcing bead which forms part of the tube the fixing bolt goes through & should be about an inch from (above) the chain as it comes of the bottom of the sprocket.  So.....what do you reckon......is it down to the 'O' ring chain being too big......a period when the bike has been run with a seriously slack chain, a knackered chain ?? (she runs loose then tight for no obvious reason) ....or "none of the above" ??  The angle off the sprocket is about 45 degrees, so how the heck that scoring has happened there, I just can't see.   

73
CB750 / Colour match for Sulfur yellow ?
« on: June 02, 2009, 11:05:38 PM »
Just wondering if anyone has a comparative RAL Code, or BS, or Pantone code for a near as perfect - or perfect match for the Honda Sulfur yellow colour.  I'd like to get some enamel mixed up but for obvious reasons ( obvious to anyone who's seen the pics I posted of the bike !) I haven't got a panel to colour match.

74
CB750 / Re: F1 original Honda exhaust rescue ?
« on: May 23, 2009, 08:38:46 AM »
Ok all.....all noted.  The guy who sold me the bike said the 'original' silencer was worth more than he was charging me for the bike......not strictly speaking true.....but I did see one on-line, supposedly 'near mint', a few weeks ago which went for several hundred pounds.  But I'm all for putting her back to original, so it'll be staying with the bike.  I have a contact who can probably make me a comparable 'insert' out of stainless.  I'm sure there's some way of fixing it into the tube.....weld in a narrow 'boss' & thread it & screw it......must be a way, where there's a will !

Steve, if you pm me an email address I'll take some pictures & send them you, so you have an idea of what's what with it.   I'll probabaly keep the Motad system - in the attic or somewhere so I've got a 'fall-back'.

cheers again,
Nigel

75
CB750 / F1 original Honda exhaust rescue ?
« on: May 22, 2009, 09:40:33 PM »
My bike is currently set up with a Motad system.  With it came the original Honda downpipes currently rigged to an original Paul Dunstall silencer, which I'm going to offload.

Also with the  bike came the original Honda exhaust.  Externally, I'd grade it 8/10 or better.  There is some very light marking to the chrome with a small section of rusted off chrome, on the under side by the drain hole, totally out of sight.

The internal condition looking down it from the "engine" end is lightly rusted but I'd say very serviceable,.......the internal tube is quite widely perforated, as per it's original construction.  The baffle plates look ok.

At the exit end, the 'tin' perforated tube is suffering a bit.  It's about 5/10 for condition.  The perforations are much smaller but a lot more of them & it's pretty "soft".....lightly holed through in places.

I thought I'd seen replacement "end tubes" but having just checked the Fiche, it looks as if the tubes are for other models & there is no sign that the silencer is servicable ?

Anyone have any experience of rescuing one of these ?  I reckon the perforated tube could be overlaid or another of slightly smaller diameter inserted ?? or is it neither here nor there & do you reckon I should just fit it & be darned ?? I don't want to knac*er up an otherwise good (looking) original silencer by "messing" - but I do want it to be servicable for as long as possible.

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