Hydro-bat by Vic Smeed: engine probs

It’s a really “Smoking Hot” model!! To quote the late John Lennon “Sir Walter Rahlgh was such a stupid get”. Although it needs an obscene amount of gold pinstripes to keep up with the rest of the paddock.
Super job on the build and covering!

Looks Great !! Can't wait to see her in action !! I like the bubble with the spaceman effect

Sweet Overlord , i like the way you shaped the narticle? engine mount ! came out nice !! Get that little man in there .

WOW!!! That is really sharp Lieven! It sits nice in the water too. Another Masterpiece!!

VERY NICE! I like how the red colour of canopy bracket-thing "resonates" with the backplate of the engine Engine fairing/nacelle is also cool, with the "kamm-tail" style. And as usual in your project, superb workmanship

Sits nice in the water too as Roddie said, although the owner of the test pool (seen in the background) doesn't look too pleased

Post a vid when you get this one running at the local pond!

OVERLORD wrote:I have bad luck. I checked the Black Lynx engine and discovered a lot of play of the crankshaft in the crankcase bore. In fact, It's like waving a pencil in the Albert Hall. I tried to get some life out of it but after squirting a little fuel in the cylinder which would make it rev instantly resulted only in a rocking piston slamming the crank up and down. I don't know how the Black Lynx engine is assembled but this was a really bad match.

Geez.. that's a shame Lieven. I wonder if the crankshaft was machined incorrectly? Do you have a micrometer to check its' dimensions against a known/good crankshaft? Alternately; a spare crankcase to check whether the Lynx-crank fits with less slop? Had you run this engine at all before discovering this? Maybe Matt will help you out with a replacement bottom-end. I don't know if the Black Lynx comes with a H/D crankshaft.. but it seems I remember there were some defective H/D cranks sourced a while back. I don't know if it was Matt, Bernie or "both" that had them.

Matt will definitely clear matters up. Sometimes these things happen, I imagine all “new” engines are assembled with a mismatch of NOS and re-manufactured parts. Sometimes it works out and sometimes not. Anyway, a quick phone call or email will remedy the problem.

Ron

roddie wrote: I don't know if the Black Lynx comes with a H/D crankshaft.. but it seems I remember there were some defective H/D cranks sourced a while back. I don't know if it was Matt, Bernie or "both" that had them.  

Those were the first batch that had the hole in the center of the crank web. The prop screw hole wasn’t centered on some of those. This was at least 6 or 7 years ago.

The latest HD cranks from Matt had good fit and finish. I just put one in a Texaco engine with a new red crankcase.

It’s possible you got a crank on the lower end of the acceptable diameter and a crankcase on the upper end of the acceptable diameter resulting in a tolerance stack up issue.

I have 2 NIB .049 Swamp Buggies to build. Too bad
I have the attention span of an ash tray.
Bob

dckrsn wrote:I have 2 NIB .049 Swamp Buggies to build. Too bad
I have the attention span of an ash tray.
Bob

you dip !

Snow!!! Greenie for effort , Maybe harden up over time .

Look so cool y like very Nice build

OVERLORD wrote:The finished boat weights 360g with radio gear. Add the pilot and it will be 370g.

That sucker looks great, what a great job. would love to see i video someday of that baby on the water.

thread BUMP..

Speak of Hydra Batty!

dckrsn on Jan 23, 2021 wrote:I have 2 NIB .049 Swamp Buggies to build. Too bad I have the attention span of an ash tray. Bob

The other day, I peaked into the shop next door to Planet Fitness. Unoccuppied for a while, it was being remodelled. Through the large glass front windows, saw display glass cases being erected in the middle of the floor. They were trimmed in bright green.

Will it be a jeweler, may be cell phone (i.e., Cricket) store?

Nope.  

https://business.clovisnm.org/list/member/cheech-and-chong-dispesoria-6172.htm

Cheech and Chong are now selling wacky smokes in Clovis.

From https://www.newswire.com/news/new-mexico-welcomes-cheech-chong-s-dispensorias-a-new-era-in-cannabis-22265094

Sorry!