My New? ST70

A place for Monkey Bike and Mini Bike (including Grom/MSX) enthusiasts. This will be moderated in accordance with C90Club rules. Welcome!
Post Reply
User avatar
Jimo
Posts: 97
Joined: Mon May 23, 2016 7:51 pm
Rides:: Honda NH125 Lead, NH80 Lead, ’78 ST70, ‘94 Helix
Location: Fakenham, Norfolk

Re: My New? ST70

Post by Jimo » Mon Jul 05, 2021 8:07 pm

Hi all, (or those interested), Today I’ve managed to fit the new centre stand/prop stand to my ST70 + two new tappet covers - the top one was a sod to release but managed with stilson wrench to free the damned thing.

I upturned the bike resting it on two 50mm thick 8’x 2’ sheets of blue foam placed size by side, - the really solid stuff, I now have the original prop stand/footrest bar spare if anyone needs it PM me..... Yet to fit are the Decals, blue headlamp shell, mph speedo and modify the 6v indicators to LEDs with a complete kit supplied by Classic Car LEDs Ltd who have been very helpful.

One very strange thing happened, when the bike was up-turned a sizeable amount of oil poured out from the petrol tank area? Before starting the job I turned off the petrol tank vent, the carb fuel cock, and drained the carb, believing that oil should be securely contained within the engine I’m mystified as to how the oil leak occurred and from where it came?

Jim

User avatar
steveST100
Posts: 1888
Joined: Tue Oct 25, 2011 3:04 pm
Rides:: 1983 C50LAC 1976 ST100 1980 ST70
Location: Clitheroe Lancs

Re: My New? ST70

Post by steveST100 » Mon Jul 05, 2021 8:45 pm

Oil would have come out the engine breather on top of the engine at the back.

steve g

User avatar
Jimo
Posts: 97
Joined: Mon May 23, 2016 7:51 pm
Rides:: Honda NH125 Lead, NH80 Lead, ’78 ST70, ‘94 Helix
Location: Fakenham, Norfolk

Re: My New? ST70

Post by Jimo » Sun Jul 18, 2021 10:54 am

During the last week I’ve fitted the LED indicator bulbs and replaced the flasher with LED compatible unit, quite a simple job with a marvellous result giving the required 78 flashes per minute. Also applied Decals where necessary, replaced speedo with new MPH readout job, now have to find out why taillight doesn’t light with engine running but pulses when Indicators are used, new rocking gear lever fitted together with new rear carrier frame.

Jim

User avatar
Capitano
Posts: 5757
Joined: Wed Oct 27, 2010 8:05 pm
Rides:: '92 C90, '97 Divvy 6, 36V home-built e-bike
Location: West Sussex
Contact:

Re: My New? ST70

Post by Capitano » Sun Jul 18, 2021 11:40 am

Sounds like you've been busy, Jim.

8-)

User avatar
wightegi
Posts: 9710
Joined: Tue Sep 01, 2009 7:23 pm
Rides:: 12v 1988 e start C90,Royal Enfield Interceptor 650
Location: Isle of Wight

Re: My New? ST70

Post by wightegi » Sun Jul 18, 2021 12:22 pm

Did you fit an LED bulb in the tail light ? if so you are mixing AC and DC ,disconnect the feed to the bulb and take a new one from a black wire.

User avatar
Jimo
Posts: 97
Joined: Mon May 23, 2016 7:51 pm
Rides:: Honda NH125 Lead, NH80 Lead, ’78 ST70, ‘94 Helix
Location: Fakenham, Norfolk

Re: My New? ST70

Post by Jimo » Sun Jul 18, 2021 12:54 pm

Whitehi No I haven’t changed the tail light bulb - leaving it as it is.

Jim

User avatar
Jimo
Posts: 97
Joined: Mon May 23, 2016 7:51 pm
Rides:: Honda NH125 Lead, NH80 Lead, ’78 ST70, ‘94 Helix
Location: Fakenham, Norfolk

Re: My New? ST70

Post by Jimo » Sun Jul 18, 2021 1:33 pm

Capitano, Yes I’ve sort of been busy, and the job’s nearing satisfaction, it’s a lovely little bike that I hope will give me much pleasure, I’m a long way from the south coast but would like to join any C90 club runs that cross my area - because it only holds 1/2 gallon of fuel, although I’m taking steps to add to this without defacing the bike in any way.

Jim

User avatar
Jimo
Posts: 97
Joined: Mon May 23, 2016 7:51 pm
Rides:: Honda NH125 Lead, NH80 Lead, ’78 ST70, ‘94 Helix
Location: Fakenham, Norfolk

Re: My New? ST70

Post by Jimo » Mon Jul 19, 2021 11:07 am

Not a lot of people know this - or do they?
Like many folk my bike (ST70) has been rebuilt using mostly new parts put into/onto the original frame - and like me found that the frame had been re-painted/powder coated and in the process all original detail on the frame has been lost. Most of these are commonly available Decals - but the most difficult one is that which was on the Head Tube adjacent to the head races which originally contained the Chassis Type, Mfg Date and Vin No.

Again on the web I found this guy who specialises in reproducing this label complete with YOUR BIKE DETAILS, the label is not particularly cheap - but then only ONE is needed which can be obtained from:
https://www.ebay.co.uk/usr/jrure?ul_ref ... noapp=true

Having found this I’ve ordered said label for my bike - sending all the information required on the ‘Contact Me’ drop-down slip of the ad together with the ads requested payment (this is important). Within 24hrs an email reply came saying ‘Got It’ and the job is proceeding. I couldn’t wish for better response!

Jim

<a href='https://postimg.cc/QKCTrHbN' target='_blank'><img src='https://i.postimg.cc/QKCTrHbN/6-C017580 ... 59-D88.png' border='0' alt='6-C017580-A913-48-CC-B0-C4-811779-F59-D88'/></a>

User avatar
Jimo
Posts: 97
Joined: Mon May 23, 2016 7:51 pm
Rides:: Honda NH125 Lead, NH80 Lead, ’78 ST70, ‘94 Helix
Location: Fakenham, Norfolk

Re: My New? ST70

Post by Jimo » Thu Jul 22, 2021 12:50 pm

My upswept exhaust pipe has a main hanging bracket which has been previously braised in place, although the exhaust’s noise is not loud I’ve ordered a new OEM replacement pipe, costly but the bike will be better for it.
As the country goes from rain to the current excessive heat I find it too much to be able to work in the garage preferring to shelter indoors while the temps last although still eager to complete the little jobs on the bike..... Really looking forward to being able to go for a run on it - and potentially attend the local Friday Bike Night event 15 miles away.

Jim

User avatar
Jimo
Posts: 97
Joined: Mon May 23, 2016 7:51 pm
Rides:: Honda NH125 Lead, NH80 Lead, ’78 ST70, ‘94 Helix
Location: Fakenham, Norfolk

Re: My New? ST70

Post by Jimo » Fri Jul 30, 2021 2:07 pm

Can anyone please tell me how to remove the left side circular cover on my 1979 ST70 cylinder head that covers the timing chain sprocket?
The Original Honda Manual says to remove two cross headed screws - but none exist!
The cover appears to be glued on.

Jim

Post Reply