Post by: stempy on August 21, 2026, 06:06:54 PM
[attachimg=2]
Post by: exvalvesetdabbler on August 21, 2026, 07:04:19 PM
Regards
Dave
Post by: Bryanj on August 21, 2026, 09:36:42 PM
Post by: Laverda Dave on August 21, 2026, 10:37:15 PM
Is it yours or have you seen it for sale?
Post by: badger_eng on August 21, 2026, 10:44:06 PM
It looks very similar to the one I fitted to my CB750 in the early eighties. Albeit still chrome rather than painted black.
[attachimg=1]
Post by: Laverda Dave on August 21, 2026, 11:13:20 PM
The Harrier came about in 1977.
Engine was based on a 458cc Yoshimura conversion with a racing camshaft fitted along with a lightened crankshaft and improved porting for the head.
Electronic ignition from Lumenition.
Carbs were standard but rejetted with 85 mains to suit the larger capacity of the motor, I was incorrect about the CR's, I saw those on a replica Harrier and was the subject of a previous forum thread some years ago. The bike later appeared for sale at Motorcycles Unlimited.
Exhaust was a black Piper system with reduced back pressure. No power figures were quoted but the original 37bhp was likely to have been upped to at least 55bhp.
The chassis featured S&W rear shocks with CMA cast aluminium wheels painted white and fitted with Avon Roadrunner tyres.
The bike was finished in white.
From the photo I don't think that bike is a real Harrier looking at the rear shocks and I don't know if the Harrier had a Dresda swing arm either. It would, I guess be very difficult to ascertain if was a real Harrier without looking inside the motor!
The Harrier was tested at 113mph, just think if it had been painted Parkeet Yellow, I'm sure 125mph+ with a standing quarter of 6 seconds could have easily been achieved (ahem, possibly....... 😉).
I don't know if there's a Harrier register, maybe something on FB perhaps?
Ian Tay who was one of the two original partners of Mocheck recently passed. Classic Bike did a feature on him about a year ago, it's worth a read.
A real Mocheck Harrier is something very special.
Post by: taysidedragon on August 22, 2026, 12:37:46 AM
Post by: Laverda Dave on August 22, 2026, 09:13:07 AM
Post by: Rozabikes Tim on August 22, 2026, 09:44:27 AM
The Mocheck Harrier had a cut out modification to the fuel tank.Was the tank cut out just a styling thing? Should have left it alone if so for me.
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Post by: taysidedragon on August 22, 2026, 11:54:06 AM
That was the replica Harrier that was discussed previously on the forum Gareth. The guy who built did an excellent job. He had fitted the CR carbs. It was being sold on eBay, it had a smoking engine as a result of worn valve guides. It mended up for sale at Motorcycles Unlimited minus the CR's and exhaust.
I've only seen photos with the tank mod. Looks better without it.
Post by: Laverda Dave on August 22, 2026, 12:04:35 PM
Someone on here must have one tucked away in a shed they don't want anymore.......
Post by: Laverda Dave on August 22, 2026, 12:05:06 PM
I'd have one with or without the tank mod. I remember going to Mocheck back when I first started riding to look at a Harrier.
Someone on here must have one tucked away in a shed they don't want anymore.......
Post by: Rozabikes Tim on August 22, 2026, 02:42:54 PM
Come on Dave, you are the 400 build man. How about doing one? You know you want to.I'd have one with or without the tank mod. I remember going to Mocheck back when I first started riding to look at a Harrier.
Someone on here must have one tucked away in a shed they don't want anymore.......
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Post by: stempy on August 22, 2026, 02:44:21 PM
Bike Details
London registered just waiting for the registrars office to reopen as it’s closer for two weeks to confirm where Bike was actually register registered in London
The bike was registed to its two previous owners in the London area.
Honda 400 four with a Yoshimura 458cc big bore kit, registered as 458cc in the V5c ??
1979 Bike that has been off the road since 1982
CMA wheels.
Dredsa swinging arm.
Tomaselli clip ons, adjustable.
Seeley fairing.
Rear sets.
Giuliari seat.
Drilled front disc.
Cibie headlight.
Marzocchi rear shock absorbers.
Yoshimura exhuast system.
Tomaselli headlight brackets.
Steering damper.
It has all the parts offered by Mocheck as a Harrier plus extra if you look at the old Mocheck shopping list ?
(https://uploads.tapatalk-cdn.com/20260822/a47d173acf0c196daa80dc13ee2c8037.jpg)
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Post by: Laverda Dave on August 22, 2026, 03:31:59 PM
Are you going to paint it white, I can recommend an excellent painter, Tony at CycleSprays in Sussex.
Post by: stempy on August 22, 2026, 03:41:05 PM
Post by: Laverda Dave on August 22, 2026, 10:42:00 PM
Come on Dave, you are the 400 build man. How about doing one? You know you want to.I'd have one with or without the tank mod. I remember going to Mocheck back when I first started riding to look at a Harrier.
Someone on here must have one tucked away in a shed they don't want anymore.......
Sent from my Pixel 5 using Tapatalk
There must be one or two stashed away in a French barn Tim. I'll pay for your petrol if you can bring me one back during your next visit. If it's a yellow one I'll pay double 😉
Post by: ka-ja on August 23, 2026, 10:09:21 AM
Post by: Rozabikes Tim on August 24, 2026, 10:35:41 AM
https://www.classicbikehub.uk/blog/article/mocheck_memories_part2/
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Post by: Johnny4428 on August 24, 2026, 11:18:14 AM
Post by: taysidedragon on August 24, 2026, 11:46:25 AM
Post by: Clouddancer on August 25, 2026, 10:55:22 AM
Post by: Clouddancer on August 25, 2026, 10:57:17 AM
Post by: Clouddancer on August 25, 2026, 10:58:17 AM
Post by: Clouddancer on August 25, 2026, 10:59:02 AM
Post by: Clouddancer on August 25, 2026, 10:59:41 AM
Post by: stempy on August 25, 2026, 06:39:04 PM
Post by: tom400f on August 30, 2026, 09:15:10 AM
The seat is a Giuliari 2-4 seat. Had one of those too! Not at all uncomfortable and did 220 miles in a day once with my brother on the back.
Post by: stempy on September 01, 2026, 07:43:53 PM
The exhaust on that bike is indeed a Yoshimura. I had a chrome one and assumed all the downpipes had been made to the same length, accounting for the odd routing. Quiet in town, gets loud at 6500rpm.
The seat is a Giuliari 2-4 seat. Had one of those too! Not at all uncomfortable and did 220 miles in a day once with my brother on the back.
Hi thanks for the reply ,I was told by the owner it was a yoshimura so great news it has been confirmed as well, just need to find a two four seat instead of the Giuliari seat , just for personal looks 🤔
Post by: XS850 on September 02, 2026, 08:50:49 AM
Post by: Sesman on September 02, 2026, 09:25:08 AM
Post by: tom400f on September 03, 2026, 05:23:25 PM
This one any use?!
See also https://www.sohc.co.uk/index.php/topic,4832.msg22478.html#msg22478
Post by: stempy on September 03, 2026, 06:23:39 PM
This one any use?!
Was it originally a two four seat ?
Post by: XS850 on September 04, 2026, 08:47:18 AM