Search found 4842 matches

by Charles uk
Fri Jan 15, 2021 3:29 pm
Forum: General Topics
Topic: FVs
Replies: 47
Views: 10790

Re: FVs

Jeremy did your database produce any any approximate dates for the water pump housing to drive shaft fitting , the drive shaft tube to crankcase fitting & the engine support lug style changes.
by Charles uk
Thu Jan 14, 2021 11:51 pm
Forum: General Topics
Topic: FVs
Replies: 47
Views: 10790

Re: FVs

The majority of pre 1975 chrome plated Seagull driveshaft tubes are 1 1/8" diameter, anyone with a lathe & the correct screw cutting tips can cut the thread, are they knurled at the crankcase end, it's a long time since I worked on one? On an ornamental basis making one from a chrome driveshaft tube...
by Charles uk
Thu Jan 14, 2021 5:20 pm
Forum: General Topics
Topic: FVs
Replies: 47
Views: 10790

Re: FVs

Adrian/Jeremy I had some new steel gaskets made for the FV's, do you want me to have a look to see if I have any left?

I also had some FV bobbin style thrust blocks made.

Charles
by Charles uk
Wed Jan 13, 2021 5:31 pm
Forum: General Topics
Topic: FVs
Replies: 47
Views: 10790

Re: FVs

You should have mention of F1082 somewhere in your notes, we discussed it several years ago, when it was living at my house for a few weeks, during it's delivery to Dorset. I wanted to cross that one off my list of models I'd not checked out the inside of, but the owner forbade my assault with the B...
by Charles uk
Wed Jan 13, 2021 2:23 pm
Forum: General Topics
Topic: 170 con rod specs
Replies: 10
Views: 3439

Re: 170 con rod specs

That's a very impressive piece of work, H-A !!!!!
by Charles uk
Wed Jan 13, 2021 11:40 am
Forum: General Topics
Topic: 170 con rod specs
Replies: 10
Views: 3439

Re: 170 con rod specs

These rods were conceived under the supervision of Max Nightingale at Alpha who sadly is no longer with us.

He did all the balance sums, I only tested to about 6500, as the revs increased it got smoother.
by Charles uk
Tue Jan 12, 2021 8:09 pm
Forum: General Topics
Topic: 170 con rod specs
Replies: 10
Views: 3439

Re: 170 con rod specs

Both fit a 13mm wrist pin, though it does have much smaller chamfers to increase the load bearing area.

Can't get much past you Kiwis!
by Charles uk
Sun Jan 10, 2021 9:33 pm
Forum: General Topics
Topic: 170 con rod specs
Replies: 10
Views: 3439

Re: 170 con rod specs

DSCF0140.JPG Your in luck Andrew I found a picture of one I remanufactured years ago. The one with the bronze big end is mine the ally big end was the last new Seagull one. Remember if you make any mistakes in the specs it's your fault & you still have to pay! I do have some unmachined 170 rod cast...
by Charles uk
Tue Jan 05, 2021 4:04 pm
Forum: General Topics
Topic: Something different
Replies: 6
Views: 2294

Re: Something different

We've had several conversations amongst the more mechanical members of the register on this subject. There are 2 schools of thought, the first which is something similar to your suggestion but could well with all the machining fixtures, cad work, casting patterns & machining time, end up with a fini...
by Charles uk
Wed Dec 30, 2020 6:24 pm
Forum: General Topics
Topic: 5R modification
Replies: 11
Views: 4092

Re: 5R modification

I built a Curlew with a 5R crankcase & a welded on tiller arm stud using a needle Kingfisher crank & 6202 5/8" bearings, I used Loctite bearing retainer to stop the crank rotating in the inner bearing sleeves & destroying itself, I had hell of a job pushing the sides apart, I even had to put spacers...
by Charles uk
Wed Dec 30, 2020 1:21 pm
Forum: General Topics
Topic: 5R modification
Replies: 11
Views: 4092

Re: 5R modification

Just a quick question, how do you remove the crank from your hybrid?
by Charles uk
Fri Dec 25, 2020 5:14 pm
Forum: Events and Racing Seagulls
Topic: KSR1100
Replies: 25
Views: 6413

Re: KSR1100

The reason I built the puller device was to avoid people damaging the crank whilst removing the flywheel. Take a look at your needle cranks, they are basically a standard silver century crank with the big end portion removed, then 2 circa 14mm diameter holes are then machined into it 20mm away from ...
by Charles uk
Tue Dec 22, 2020 12:52 am
Forum: Events and Racing Seagulls
Topic: KSR1100
Replies: 25
Views: 6413

Re: KSR1100

Salt water use & lack of TLC is the most common cause of death on later model Seagulls. Your water jacket looks pretty good & unless there are rust flakes about to fall off I wouldn't clean it too much, clean bare cast iron & salt water is only a superfood for oxidation, I'd give a poke everywhere w...
by Charles uk
Sat Dec 19, 2020 1:30 am
Forum: Events and Racing Seagulls
Topic: KSR1100
Replies: 25
Views: 6413

Re: KSR1100

IMG_5803 (5).jpg Here's a picture of the drill guide /puller tool that I use for Wypac CDI flywheels on motors. In it you will see 6 holes 60 degrees apart & a crankshaft sized hole in the middle, 3 of the holes 120 degrees apart are 1 @ 4.8 mm diameter & 2 x 4 mm the other 3 holes 60 degrees away ...
by Charles uk
Tue Dec 15, 2020 6:13 pm
Forum: Events and Racing Seagulls
Topic: KSR1100
Replies: 25
Views: 6413

Re: KSR1100

Why not ask yourself the following questions. How much & where am I planning to use this Seagull, On a scale of 1 to 10 how bad is the cylinder corrosion, Are there any Bermudian cranks left & will one fit straight in your crankcase, Does the crankshaft freely rotate when back in the crankcase, Were...