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Author Topic: WEBRA speed 61  (Read 405 times)

Offline bob whitney

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WEBRA speed 61
« on: January 12, 2018, 10:30:07 PM »


has anyone had any experience with the WEBRA speed 61 for stunt
rad racer


Offline Matt Spencer

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Re: WEBRA speed 61
« Reply #1 on: January 12, 2018, 10:39:54 PM »
No , but theyre almost a HP 40 , if youre after noseweight .

I believe a few ( Maikus amougst others ) have used Speed 40s .

Ive looked at the Speed 60 RV , and think it should be suitable .

The HP 40 ' they ' drop the Timing to 130 / 110 . Stock I think some of the 60s are that , or 140/120 . a ' spacer ' as piston stop ,
to find 130 Ex , and thats the ' drop ' you need to machine in the case top for the liner . First Checking the piston skirt wont ' unport ' at TDC . Like a FSR 40 does  :-X

just looking at the scetre flight reviews , most are 142/ 120 , but some later are 150 Ex, There were / are some ABC too . Id think 150 Ex may be a little high , 4 in pitch prop like.
so would pay to throw a protractor on and see . Did I mention theyre not light . V similar to the HP 40 , which are V good at 130 Ex , both F & R induction . the RV may be better .


Er , the RV 40 with the 130 timing is still a 4 in pitch prop sucker , for the wind . Tho I believe over there 12 & 11 x 6s were used on em , Bob Mc Donald etc etc . Just hold on, Tight .
 ;)

Dunno how old this is , was just looking for a picture .


Seems theres some trash for sale, sometime . Sprekinsiedeutshe .https://antiquemodelenginesrunning.blogspot.com.au/2014/07/webra-speed-61-rv.html


Offline GERALD WIMMER

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Re: WEBRA speed 61
« Reply #2 on: January 13, 2018, 04:09:58 AM »
Hello
A HP 61 Gold Cup (I used rear induction) is very similar and was a motor I enjoyed using for stunt over 20 years ago . Only problem was the rear induction limits tank size and position but front induction would be easier here. Had a nice run and would spin a 13x6 happily but then swapped to a 90 four stroke with 14x6 prop as that was the new thing to try. Those Webra Speed engines still look really nice too !  ;)
Regards Gerald

Offline Motorman

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Re: WEBRA speed 61
« Reply #3 on: January 13, 2018, 08:47:11 AM »
My Webra experience is with the Siverline 40 but I figure my info will cross over. The Webra's have a nice hardened steel sleeve but the problem is the ring. Mine had an anti rotation pin, that was completely unnecessary, and the ends of the ring would ride up on it and wear out loosing almost all compression in one day of flying. I pulled the pin out but there were no rings available as the engine was out of production.


MM     
« Last Edit: January 13, 2018, 08:37:18 PM by Motorman »
There will be a sunny day and we will fly our airplanes.


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