Rotax® Engine Bing Carburetor Upgraded Replacement Float Set of Two - MS80-430.
These solid, one-piece blue epoxy floats will not leak, absorb fuel or break apart like the micro-bubble foam float competitors. These floats can withstand extreme temperature changes and are truly unsinkable when exposed to the elements! The Marvel Schebler MS80-430 blue floats are direct replacements for the existing Bing floats P/N 861-184.
Appears to be superior to rotax part..addresses service advisory
MS80-430 FLOAT KIT FOR BING CARBERETOR/ROTAX (2 FLOATS PER KIT)
My legacy Rotax/Bing floats joined the sinker club recently, not wanting to continue with the same old tale of factory floats not holding up, and one more manufacturing change / supplier move / service bulletin / who knows what for this critical component - I bought these. Individual & pair weights are great (~5.5 -5.6 grams for the pair). For more info on tips on installing these I made a video: https://www.youtube.com/watch?v=FTXIGjHwPDo
Ordered March 17, 2021. Received the updated design (as shown in product image) with pyramid shape to top. This is lighter than the original design, the two pair I received check ~ 5.5 to 5.6g per set. For the price of Rotax / Bing factory floats, and the track record of service bulletins and floats becoming heavy over time, I think these make sense for experimental category 912 engines.
This seems to be a fine product. However, delivery proved to be a bit of a challenge. I had to contact Marvel-Schebler directly and ask to have the parts drop shipped since Aircraft Spruce had back ordered the parts. Marvel-Schebler was most helpful and the parts were shipped the same day.
Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.
Per the manufacturer: The MS80-430 blue floats are direct replacements for the existing Bing floats P/N 861-184. We do not believe they are appropriate for use with all Bing carbs.